The fastest way to cut your Logan rental cost is to compare prices across all major companies before you book

Logan Airport (BOS) has six rental car companies on-site: Hertz, Enterprise, Avis, Budget, National, and Alamo. Each charges different daily rates for the same car type, and prices shift based on demand, season, and how far ahead you book. Comparing all six takes about five minutes and typically saves $15 to $40 per day.

The companies' own websites often show lower rates than aggregator sites like Kayak or Priceline, but not always — aggregators sometimes have exclusive corporate codes or flash discounts. The real savings come from checking both, then calling the company directly if you find a lower rate elsewhere. Most will match or beat a competitor's quoted price to win your business.

Booking at least one week ahead almost always costs less than same-day rental. Prices at Logan tend to spike on weekends and during summer travel season (June through August). If your dates are flexible, shifting your rental by even two days can cut the cost by 20 to 30 percent.

Key Takeaways

  • Compare rates on all six on-site companies' websites plus one aggregator site before booking, since the cheapest option changes by date and car type.
  • Book at least seven days ahead — same-day rentals at Logan typically cost 30 to 50 percent more than advance bookings.
  • Off-airport locations in nearby towns like Revere or Malden are sometimes cheaper, but factor in the cost and time of getting there and back.
  • Check whether your credit card or insurance already covers collision damage, since declining the rental company's damage waiver can save $12 to $25 per day.
  • Fuel charges add up fast; most companies charge $6 to $8 per gallon if you return the car empty, so fill up at a regular gas station before returning.

Where to look for the lowest daily rates

Start with the six on-site companies: Hertz, Enterprise, Avis, Budget, National, and Alamo. Go to each company's website directly and enter your dates and times. Write down the daily rate for the car class you need (economy, midsize, SUV, etc.). This takes 15 minutes and gives you the baseline.

Then check one aggregator — Kayak, Priceline, or Autoslash are the most common. These sites pull rates from the same companies but sometimes show lower prices because they have negotiated volume discounts or promotional codes. If the aggregator shows a lower price, note the rate and the company name, then call that company directly. Many will match the aggregator price or beat it if you ask.

One more step: check whether your employer, union, or professional association offers a rental discount code. AAA members, for example, often get 10 to 15 percent off. These codes don't always show up in online searches, so calling the company's reservations line and mentioning your membership can unlock savings the website didn't display.

Off-airport locations that may cost less

Rental companies at off-airport locations in Revere, Malden, and Waltham sometimes quote lower daily rates than Logan. The catch is that you have to get there. A taxi or rideshare from Logan to an off-airport location costs $20 to $35 each way, and the trip takes 15 to 25 minutes depending on traffic. You also lose the convenience of picking up and dropping off at the airport.

The math usually favors the airport location unless you're renting for five days or longer and the off-airport rate is at least $10 per day cheaper. For a three-day rental, the savings in daily rate would have to exceed $13 to $17 per day just to break even after transportation costs. Check the off-airport rates, but don't assume they're cheaper without doing the full calculation.

How damage waivers and insurance affect your total cost

Rental companies offer a collision damage waiver (CDW) or loss damage waiver (LDW) — these are insurance products that protect you if the car is damaged or stolen. The daily cost ranges from $12 to $25 depending on the company and car type. Many renters buy it out of caution, but you may already have coverage.

Check your personal auto insurance policy first. Most policies cover rental cars at the same level as your own vehicle, which means you're already protected if you decline the rental company's waiver. Credit card companies also sometimes cover rental damage if you charge the full rental to that card — American Express and some premium Visa cards do this, but coverage varies. Call your card issuer before you rent to confirm.

If you have no other coverage, the rental company's waiver is worth buying. If you do have coverage, declining it saves $12 to $25 per day. That's $60 to $125 on a five-day rental. Read your policy or call your insurer to be certain before you decline at the counter.

Fuel charges and how to avoid them

Rental companies charge $6 to $8 per gallon if you return the car with less than a full tank. This is roughly double the price of regular gas at a Boston-area pump. The math is straightforward: fill up at a gas station near the airport before you return the car. A full tank costs $50 to $70 at a regular station versus $120 to $160 if the rental company does it.

Some companies offer a "pre-purchase fuel" option where you pay for a full tank upfront at a slightly lower per-gallon rate. This only makes sense if you're confident you'll return the car nearly empty. Most renters overpay this way because they return the car with a quarter tank still in it.

The cheapest option is to rent with a full tank already in the car, use what you need, and return it full. Gas stations near Logan are on Route 1A heading toward Revere and on the roads leading to I-90. Allow 10 to 15 minutes to fill up before heading to the return lot.

Seasonal pricing and the best times to book

Summer (June through August) is peak travel season in Boston, and rental rates reflect that. Daily rates for economy cars can jump from $35 to $60 during July and August. Fall (September through October) and spring (April through May) are moderate — rates typically run $40 to $50 per day. Winter (November through March) is cheapest, with economy cars often available for $25 to $40 per day.

Within any season, weekends cost more than weekdays. A Friday-to-Sunday rental costs roughly 20 to 30 percent more than a Monday-to-Wednesday rental for the same car. If your trip is flexible, shifting by two or three days can save $30 to $60 on a three-day rental.

Booking timing also matters. Prices are usually lowest when you book 7 to 14 days ahead. Booking more than 30 days in advance sometimes locks in a low rate, but prices can drop closer to your travel date, so you may overpay. Booking fewer than 3 days before your rental almost always costs more. The sweet spot is one to two weeks ahead.

What to check before you finalize your reservation

Once you've found the lowest rate, review the full terms before confirming. Check the pickup and return times — some companies charge a partial day rate if you pick up or return outside standard hours (usually 7 a.m. to 7 p.m.). Confirm the car type you're getting, not just the class. A "compact" might be a Honda Civic or a Hyundai Elantra; both are fine, but you want to know what to expect.

Verify the mileage policy. Most Boston rentals are unlimited mileage, but some budget companies cap it at 100 to 150 miles per day and charge $0.25 to $0.50 per mile over that. If you're driving to the Cape or New Hampshire, unlimited mileage is worth paying extra for. Check whether the quoted price includes airport facility fees — most do, but some aggregator sites show a lower base rate and add fees at checkout.

Finally, confirm the cancellation policy. Most reservations can be cancelled free up to 24 hours before pickup, but some budget companies charge a fee. If your plans might change, book with a company that allows free cancellation.

Frequently Asked Questions

Is it cheaper to rent a car at Logan or pick one up downtown?

Downtown Boston rental locations (Hertz, Enterprise, and others have offices on Hanover Street and near the Prudential Center) sometimes quote lower daily rates than Logan. However, you have to get downtown first, which costs $15 to $25 in taxi or transit fare. The downtown location is cheaper only if the daily rate is at least $5 lower and you're renting for three days or more. For most travelers, the airport location is more convenient and costs the same or less.

Do I need to buy the rental company's insurance if I have my own car insurance?

Most personal auto insurance policies cover rental cars at the same level as your own vehicle, so you don't need the rental company's damage waiver. Check your policy or call your insurer before you rent to confirm. If you have no other coverage, the rental company's waiver is worth buying. Declining it when you have coverage saves $12 to $25 per day.

What happens if I return the car with an empty tank?

You'll be charged $6 to $8 per gallon for fuel, which costs roughly double what you'd pay at a gas station. Fill up at a regular gas station near the airport before returning the car. This saves $50 to $100 on a typical rental.

Can I get a lower rate by calling the rental company instead of booking online?

Sometimes. Online rates are usually the lowest, but calling the reservations line and mentioning a discount code (AAA, corporate, etc.) can unlock savings the website didn't show. If you find a lower rate on an aggregator site, call the company directly and ask if they'll match it. Many will.

Is it worth booking more than a month in advance to lock in a low rate?

Not usually. Prices often drop closer to your travel date, so booking 30+ days ahead can mean you overpay. The best time to book is 7 to 14 days before your rental. If you book very far ahead and prices drop, you can usually cancel free and rebook at the lower rate.